Aquarium pump



FIG. 1 is a front view of the aquarium pump showing a new ornamental design thereof;

FIG. 2 is a right side view of the aquarium pump shown in FIG. 1;

FIG. 3 is a right side perspective view of the aquarium pump shown in FIG. 1;

FIG. 4 is a top view of the aquarium pump shown in FIG. 1; and,

FIG. 5 is a back view of the aquarium pump shown in FIG. 1. 

The ornamental design for aquarium pump, as shown and described. 